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I was just figuring out the minimum and maximum pressure the IM shaft would see if it were sealed with a freeze plug. Using P1/T1 = P2/T2, volume is not a variable. So that would mean that if the bearing is sealed with its own seals, it would see the same changes in pressure over temperature? Venting the shaft would not help? The grease in the sealed bearing will still see the same pressure changes I think.
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It's all bad
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